單項選擇題

What is the purpose of the STP PortFast BPDU guard feature？（）

A.enforce the placement of the root bridge in the network
B.ensure that a port is transitioned to a forwarding state quickly if a BPDU is received
C.enforce the borders of an STP domain
D.ensure that any BPDUs received are forwarded into the STP domain

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多項選擇題

Which two commands are required to enable multicast on a router， knowing that the receivers only support IGMPv2？（）

A.ip pim rp-address
B.ip pim ssm
C.ip pim sparse-mode
D.ip pim passive

多項選擇題

Which two of these are used in the selection of a root bridge in a network utilizing Spanning Tree Protocol IEEE 802.1D？（）

A. Designated Root Cost
B. bridge ID priority
C. max age
D. bridge ID MAC address
E. Designated Root Priority
F. forward delay

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What is the purpose of the STP PortFast BPDU guard feature？ （）

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Which two commands are required to enable multicast on a router， knowing that the receivers only support IGMPv2？（）

Which two of these are used in the selection of a root bridge in a network utilizing Spanning Tree Protocol IEEE 802.1D？（）

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What is the purpose of the STP PortFast BPDU guard feature？（）

Which two commands are required to enable multicast on a router， knowing that the receivers only support IGMPv2？（）

Which two of these are used in the selection of a root bridge in a network utilizing Spanning Tree Protocol IEEE 802.1D？（）